What are the reasons for using stacked bearings in multi-stage pump motors, and what does \"stacked shafts\" mean? Could some expert please explain it to me?
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What are the reasons for using stacked bearings in multi-stage pump motors, and what does \"stacked shafts\" mean? Could some expert please explain it to me?
Reasons for large shaft runout in motors: First, the center of the magnetic flux lines does not coincide with the installation position； The second reason is due to the large series connection of pumps
The main shaft of a multi-stage pump is equipped with stacked bearings because such pumps generate high head pressures and significant axial forces. Angular contact bearings or tapered bearings are installed in series to distribute these axial forces across multiple bearings, thereby enhancing the reliability of the bearings. I’m not quite sure what you mean by \"stacked shafts\"
You are referring to motors with a higher power rating. The motor operates by being positioned along the magnetic center line; during installation, the motor shaft should be placed at the position of the magnetic center, and then the coupling shims should be adjusted accordingly. If the adjustment is not done properly, the operation of the motor can cause the shaft to shift significantly, resulting in damage to the thrust bearings